Spool



Aug. 16, 1938. H. c. HOWSAM SPOOL Filed Dec. 24, 1936 aw... a il nmmr Patented Aug. 16, 1938 I v UNITED STATES PATENT OFFICE 2,126,993 SPOOL Hilyard C. Howsam, Chicago, Ill., assignor to Hubbard Spool Company, Chicago, 111., a corporation of Illinois Application December 24, 1936, Serial No. 117,554

' 8 Claims. (Cl. 242124) This invention relates to spools for supporting means for clamping the heads to the barrel tube material such as wire or the like, and which are ends may be in the form of screws I3 arranged strong and durable yet comparatively light, and as disclosed in my copending application Serial which may be constructed entirely or only partly No. 113,315, filed November 30, 1936, patented 5 of metal. October 26, 1937, as Patent 2,096,965. As shown 5 The spool of my invention comprises a barrel in Figure 3, the ribs I6 are spaced 90 apart and in making the barrel tube and the arbor receiv- .site and spaced 90 from the bosses I 9 and I9. 10 ing tube parts of an integral structure which As shown, the bosses I 9 and I9 have unthreaded -may be readily die cast or molded from metal, passages 2| therethrough, while the bosses 2o non-metallic materials, or suitable composition and have threaded passages 22 therethrough. material. A further important object of the in- The unthreadd passages 2| are counterbored at 15 vention is to provide one or more channels in their outer ends to receive the heads of the screws 15 the arbor receiving tube part of the spool in extended therethrough, while the threaded pasoperation. can be made exactly alike in order to be inter- The above cited and other important features changeable. I have shown four screws, but it is of the invention are incorporated in the structure evident that a greater number of screws may be shown on the drawing, in which drawingzprovided as desired, with one set of screws thread- 5 Figure l is a side elevation of a spool, partly ing into one of the heads and the other set of 25 in vertical diametrical section; screws threading into the other head.

Figure 2 is an end view; The flanges I5 of the heads engage snugly in Figure 3 is a section on plane III-III of Figthe ends of the barrel tube II to form a tight ure 1; and and rigid joint. In order to secure against rela- Figure 4. is an end view of the barrel and arbor tive displacement of the heads and barrel tube, 30 tube structure. the head flanges I5 may have key extensions 23 The spool comprises heads I0 and I0, a barrel engaging in keyway 24 formed in the barrel tube part II, an arbor receiving tube part I2, and III. The key ex n i ns n w y ar so 10- means such as screws I3 for clamping the heads cated that when the spool is assembled, the

to the barrel part II. The heads are preferably screws I3 will pass through the spaces between 35 die castings of strong and durable yet comparathe spokes I8 of the integral barrel and arbor tively light metal but could be die cast, pressed, ece vi 's u emolded, or otherwise formed of non-metallic ma- The arbor receiving tube part I2 is in axial terial, such as Bakelite, fiber, or suitable comalignment with the passages I! through the 40 position material. heads, and the length of the tube part is such as 40 Each head I 0 is in the form of a disk having the tube will afiord ample engagement surface flange I4 surrounding the win-ding arbor passage tion, in which springs 26 are supported in longithe adjacent end of the barrel part I I. bowed beyond the surface of the arbor so as to The barrel part II and the arbor receiving part be compressed when the arbor is inserted in the I2 are tubular and form part of an integral strucarbor receiving tube and to establish a friction 0 ture of metallic or non-metallic material and connection. In order that such friction connecdie cast, molded, or otherwise formed. In this tion will not have to be depended upon to preintegral structure, the barrel tube and the arbor vent turning of the spool on the arbor, I provide a receiving tube are held together by spokes or groove or keyway 28 in the tube part I2 for rearms I8 extending from the middle portion of ce v g One Of the arbor Springs 50 that the 81 1 3 the arbor receiving tube to the barrel tube. The will be secured to the arbor against any rotational Cal movement thereof. When the spool is slipped onto an arbor, the springs may not be in alignment with the keyway 28 and the spool will be held frictionally to the arbor, and should the spool rotate relative to the arbor, the keyway 28 will receive the nearest spring and then further relative rotational movement will be prevented.

The integral structure comprising the barrel and arbor receiving parts can bereadily cast of metal or molded or otherwise formed of suitable non-metallic material, such as or composition material. In such integral structure, the cylindrical barrel winding surface will always be co-axial with the tube l2 andthe supporting arbor so that the spool will alwaysrun true for accurate and efficient winding.

1 have shown a practical and efficient embodiv ment of the various features of my invention, but I do not desire to be limited to the exact structure, arrangement, and operation shown and described as changes and modifications may be made which would still come within the scope of the invention.

I claim as follows:

1. A spool structure of the class described comprising heads having each a cylindrical extension on its inner side, a barrel tube seating at its ends on said extensions to be held thereby concentric with said heads, an arbor receiving tube extending axially within said barrel tube between said headsand spaced at its ends from said heads, said barrel tube and said arbor receiving tube forming part of an integral structure, each head having an axial passageway in alignment with said barrel tube between the inner the arbor receiving tube bore for assisting said tube in aligning an arbor and holding the spool concentric thereon, and means for clamping said heads against the barrel tube ends.

. 2. A spool structure of the class described comprising a barrel tube, heads each in the form of a disc having outer and inner cylindrical flanges extending inwardly therefrom, said outer flanges receiving and seating the barrel tube at its ends, an arbor receiving tube extending axially within flanges on said heads and spaced at its ends from said flanges, each head having an axial bore therethrough surrounded by its inner flange for assisting the arbor receiving tube to extending therethrough and to hold the spool concentric with the arbor, said barrel tube and arbor receiving tube forming part of an integral structure.

3. A spool structure of the class described comprising a barrel tube, heads each in the form of a disc having a cylindrical projection on its inner side for receiving and seating the barrel tube at its respective end, an arbor receiving tube extending axially within said barrel and spaced at its ends from said heads, said arbor receiving tube being supported solely by said barrel tube, said heads having each an axial passageway therethrough coaxial with the bore of the arbor receiving tube for assisting said arbor receiving tube in mounting the spool structure on. and conceni an arbor, and means extending between said heads for clamping the barrel tube ends.

HILYARD C. HOWSAM.

trically with through and said heads to 

